Joseph beaulieu



Sept. 6, 19 2 7, I 1,641,875

- J. BEAULIEU Auroumrc DAMPER ruqd'uar h 8,.1927

m gzi a INVENTOR Joseph Beaulwu/ wn masses I BY I i g W I ATTORNEY Patented Sept 6,

Y Josnfi n BnnuIJIEU, Lemm -awr 403 f nu roMAric iinMrEn-K Application filed March 8, 19:27;"Seria1=N'o. 173,722. L-

This-invention relates to automatic ers and more specifically to a device adaptedtobe located in anoutletiflue, pipexor pas,-

sage which will serve as -a fuel saver that extent the passage it'will prevent to alarge I of heat unitsup'the'fiue; H

full draft the'device' will be open and will gradually'close as the draft diminishes, and- Which-is provided with means for preventing 7 gas to escape and not choke the fire or-pass out into the room. 7 1

A further object is to provide a device of this character which is capable of adjustment to fit any location of pipe, that is, vertically, horizontally or angularly disposed.

Afurther object is to provide a device of this character which is so mounted as to reduce friction to a minimum and insure a per,-

7 feet automatic action under all conditions.

WVith these and other'objects in View, the invention consists in certain novel features of construction and combinations and arrangements of parts, which will be more in the claims.

In the accompanying drawings Figure 1 is a view in longitudinal section showing my improved pipe in operative position relative to a furnace;

Figure 2 is a view in transverse section through the outlet flue or pipe, showing the damper in elevation;

Figure 3 is a fragmentary view in section on an enlarged scale on the line 3-3 of Figure 2; V

Figure 4 is a View in side elevation illustrating my improved damper in a vertical pipe and having'a modified forinof weight;-

Figure 5 is an enlarged view in section on the line 5-5 of'Figure 3.

1 represents a furnace and 2 an outlet pipe or flue operatively connected to, the outlet 3 of a furnace. It is'to be assumed of course that the furnace is heated by oil burners, gas burners, or any other form of burners for fuel consumption, and that the furnace will be equipped with ordinary draft-controlling means, such as are common on the market. v

In the outlet pipe or flue 2 or in a section of said pipe or in any suitable manner which can be used I employ an improved damper 4 which' is 'ofa shape to conform to the general shape- 0f the pipeg2, and while I have shoWn-the-same in circular form. it 1s obvious that it maybe ofany shape. This damper 4 is of slightly smaller diameter thanthe inpipe 2 so as to allow ternal' diameter of the it .to move freely therein. i' shaft 5-supports the damper 4 and the.- latter may beprovided with oifsetportions 6 in aplane extending through thecenter. of the disk so as to receive the; shaft as clearly shown in I igures2and13. 4

. The shaft 5 projects through openings? in;

the walls of pipe 2, and while these openings 7 are of circular form the shaft is preferably made angular so that the shaft has a plurality of bearing points which reduce friction.

I have shown the shaft 5 as triangular in cross section where it extends through the openings 7 but it is obvious that it may be made of other shape. 1

To properly center the damper within the pipe 2 Iprovlde longitudinal adjustable contact plates 8 connected by screws or other adjustable means 9 with the damper 4, the ends of said plates adapted to contact with the inner face of pipe 4 and hold the shaft 5 against undue longitudinal movement. It is of course to be understood that there will be suflicient space or play between the ends of the plates 8 and the wall of the pipe 2 to compensate for the transverse curvature ofthe latter.

I have illustrated as a specific construction said platesS having longitudinal slots 10 therein through which the screws 9 project and are screwed into the laterally oflset portions 6 adjacent the edges of the disk or damper 4.

I preferably provide, a plurality of openings 11 in the upper portion of the damper through which gas may escape even if the damper is closed, and I locate a. weight 12 on the lower portion of the chamber to close the same by gravity.

Instead of providing the damper with the weight 12 I may secure a weighted crank arm 13 to the end of the shaft opposite the pipe 2, and this arm 13 may be adjusted on the shaft and secured at any desired adjustment by means of a set screw 14, so that the damper may be used either in a horizontal pipe, or a verticalpipe such as shown in Figure 4, or in a pipe having any angular disposition, the arm being adjusted so as to hang vertically and cause the damper to be closed by gravity.

I may also employ a conical deflector or nozzle 15 within the pipe 2, or at any point between the damper and the furnace so as to direct the draft or current against the damper, as may be desired. I illustrate in dotted. lines in Figure l a position of adjustment of said dellcctor or nozzle, and it is of L'Olll'blB to be lllltlGIfS-ilOOtl that when these parts are once adjusted for proper opertion or pernninently secured the adjustment only to component for varying conditions which prevail in dillerent places.

In operation, the damper will open freely when the furnace is under full draft, and when the draft is cut down the damper will automatically close and prevent the heat from being wanted up the chimney.

While I have illustrated what I believe to be a preferred embodiment of my invention, it is obvious that varioue changes and alterations might be made in the general form of the parts described Without departing from the invention and hence I do not limit myself to the precise details set forth but consider rnyselt at liberty to make such changes and alterations as" fairly lall within the spirit and Scope of the appended claims.

I claim:

1. In combinationwith a pipe, a damper in the pipe. a shaft connected to the damper and projecting through the pipe, and adjustable plates on the damper engaging the inner wall of the pipe to center the damper therein.

1 In combination with a pipe, a damper in the pipe, a shaft connected to the damper and projecting through the pipe, and adjustable plates on the damper engaging the inner walls of the pipe to center the damper therein, said pipe having circular openings receiving the shaft and said shaft angular in cross section where it projects through the openinge.

J tril PH BEAULIEU. 

